Home / 13,388.04-18,474.66-7,419.36

Finding the Fourth Proportional to 13,388.04, 18,474.66 and 7,419.36

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Solution

The fourth proportional to 13,388.04, 18,474.66 and 7,419.36 is: 10,238.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.04 : 18,474.66 = 7,419.36 : x
  2. Step 2: Convert to fraction form
    13,388.04/18,474.66 = 7,419.36/x
  3. Step 3: Cross multiply
    13,388.04x = 18,474.66 × 7,419.36
  4. Step 4: Simplify right side
    13,388.04x = 137,070,153.42
  5. Step 5: Solve for x
    x = 137,070,153.42/13,388.04
  6. Step 6: Final answer
    x = 10,238.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.